Datasheet

MXL1543
+5V Multiprotocol, 3Tx/3Rx, Software-
Selectable Clock/Data Transceivers
______________________________________________________________________________________ 15
CTS A
4
2
14
24
11
15
12
17
9
3
16
7
19
20
23
8
10
6
22
5
13
18
CTS B
DSR A
DSR B
DCD A
DCD B
DTR A
DTR B
RTS A
RTS B
RXD A
RXD B
RXC A
RXC B
TXC A
TXC B
SCTE A
SCTE B
TXD A
TXD B
CHARGE
PUMP
DTE
DCE
RTS A
RTS B
DTR A
DTR B
DCD A
DCD B
DSR A
DSR B
CTS A
CTS B
LLA
LLA
TXD A
TXD B
SCTE A
SCTE B
TXC A
TXC B
RXC A
RXC B
RXD A
RXD B
SG
M2
C12
1µF
C13
1µF
C5
4.7µF
C2
1µF
C1
1µF
C4
1µF
C3
4.7µF
2
21
D1
D2
D3
R1
R2
R3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
3
V
CC
5V
1
2
4
5
6
7
8
9
10
11
12
13
14
14
3
4 6 7 9 10 16 15 18 17 19 20 22 23 24 15
8111213
C6
100pF
C7
100pF
C8
100pF
M1 M0
DCE/DTE
M1
M2
DCE/DTE
M0
V
CC
V
CC
V
EE
V
EE
V
CC
V
DD
GND
LATCH
MXL1344A
MXL1543
D1
D2
D3
D4
R1
R2
R3
26
27
28
25
24
23
22
21
20
19
18
17
5
6
7
8
9
4
3
1
2
R4
16
15
10
11
12
13
14
M1
M2
DCE/DTE
INVERT
M0
M1
M2
DCE/DTE
M0
DB-25
CONNECTOR
MXL1544
MAX3175
C11
1µF
C10
1µF
C9
1µF
1
SHIELD
DTE_TXD/DCE_RXD
DTE_SCTE/DCE_RXC
DTE_TXC/DCE_TXC
DTE_RXC/DCE_SCTE
DTE_RXD/DCE_TXD
DTE_RTS/DCE_CTS
DTE_DTR/DCE_DSR
DTE_DCD/DCE_DCD
DTE_DSR/DCE_DTR
DTE_CTS/DCE_RTS
DTE_LL/DCE_LL
Figure 19. Multiprotocol DCE/DTE Port